[llvm] [ThinLTO] Reduce the number of renaming due to promotions in distribu… (PR #188074)

[Teresa Johnson via llvm-commits]

https://github.com/teresajohnson commented:

Couple suggestions below. Also, please don't rebase while reviewing is in progress (https://llvm.org/docs/GitHub.html#rebasing-pull-requests-and-force-pushes).

https://github.com/llvm/llvm-project/pull/188074